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wmmzns or PAPER menus OPERATING APPARATUS FOR SAFETY GUARDS 0N ROLLOriginal Filed Aug. 14, 1925 2 Shuts-Shoat 2 2.7.2900 O villa/7] jPatented May 10, 1927.

UNITED STATES PATENT OFFICE.

EDWARD BOURGORD AND ALVIN LEITL, F PARK FALLS, WISCONSIN.

OPERATING APPARATUS FOR SAFETY GUARDS 0N ROLL WINDERS OF PAPER MACHINES.

Application filed August 14;, 1925, Serial No. 50,284. Renewed February24, 1927.

The Jresent invention relates to an apparatus or operating the safetyguard on a roll winder of a paper machine, and has for its principalobject to provide a structure that automatically controls the travel,and the clearance of the safety guard from the beginning of the windingof the roll of paper until it is finished.

Another important object of the invention is to provide an apparatus ofthis nature which is exceedingly simple in its construc tion,inexpensive to install, eflicient. and reliable in operation, durable,not likely to easily become out of order, and otherwise well adapted tothe purpose for which it is designed.

"With the above and numerous objects in View as will appear as thedescription proceeds, the invention resides in certain novel features ofconstruction, and in the combination and arrangementof parts as will behereinafter more fully described and claimed.

In the drawings Fi ure 1 is a front elevation of a paper winding machineshowing our improved apparatus associated therewith, and

Figure 2 is a vertical section therethrough.

Referring to the drawings in detail it will be seen that we haveillustrated a well known form of paper winding machine which includesamong other elements a frame designated generally by the letter A andhaving the uprights B in which are slidable the bearings C for mountinthe winder shaft D. A shaft E is journa ed in the up 1' ends of theuprights B, and has fixed tiereto a ear F meshing with a pinion Goperable y a gear H meshing with a. gear J on the shaft of an operatinwheel A air of rack pinions L are xed to the shaft E, and have meshedtherewith rack bars M rising from the sliding bearings C. It will thusbe seen that the winder shaft D may be raised or lowered by turning thewheel K. Packing and guide rollers N and O are mounted for rotationbelow the winder shaft D in the usual manner.

The parts which we have thus far described are all of conventionalconstruction,

and well known in this art, and have been set forth in detailsufiiciently to bring out the utility and operation of our improvedapparatus, which we shall now describe in detail. A guard 5 of the usualformation is journaled about the axis of the roller 0 by brackets 6, oneof which is provided with an arm 7 engaged with one link of a chain 8.This vchain S is trained over sprockets 9 journale'd at the lower end ofthe frame A and over a sprocket 10 mounted on the shaft E to rotatetherewith. These parts desig nated by the numerals comprise our improvedapparatus. It will be seen that as the paper winds upon the shaft D inthe usual manner, the roll of paper increases, and the shaft D and itsbearing C rise, thereby moving the rack bars M so as to rotate thesprockets L and the shaft E. The rotation of the shaft E causes therotation of the sprocket 10, the movement of the chain 8 in its orbit oftravel, thereby swinging the arm 7, and revolving the guard 5 about theaxis of the roller 0, thereby maintaining a constant distance betweenthe upper edge 11 of the guard 5, and the periphery 12 of the roll 13being formed on the shaft D. This apparatus will prevent numerouspainful accidents which are caused by persons working on the roll 13, aswill be apparent to those familiar with machines of the class describedherein.

It is thought that the construction, operation, utility, and advantagesof our improved apparatus will be clearly understood by those skilled inthis art without a more detailed description. The present embodiment ofthe invention, which we have disclosed in detail, has been given merelyby way of example since in actual practice it attains the features ofadvantage enumerated as desirable in the statement of the invention andthe above description. It will be apparent that changes in the detailsof construction, and in the combination and arrangement of parts may beresorted to without departing from the spirit or scope of the inventionas hereinafter claimed or sacrificing any of its advantages.

Having thus described the invention, what we claim as new is 1. Anapparatus for operating a safety guard on a roll winder; whereln the rolwinder includes among other elements a frame, a winder shaft, bearingsfor the winder shaft slidable in the frame rack bars leading from thebearings, a shaft 'ournaled in the frame, rack pinions on the actmentioned shaft meshin with the rack bars, and a pair of packer rol ers;comprising a guard revolvable about the axis of one of the rollers, anarm extending from the guard, an endless member mounted to travel in apredetermined orbit and 0 eratively associated with the shaft havingtiereon the rack pinions, said endless member being connected with saidarm whereby as the winder shaft moves away from the packer rollers, saidguard will be revolved.

2. An apparatus for operating a safet guard on a roll winder; whereinthe r01 winder includes among other elements a frame, a winder shaft,bearings for the winder shaft slidable in the frame, rack bars leadingfrom the bearings, a shaft journaled in the frame, rack pimons on thelast mentioned shaft meshing with the rack bars, and a pair of ackerrollers; comprising a guard revolvabl e about the axis of one of therollers, an arm extending from the guard, a pair of sprockets mounted onthe frame, a sprocket mounted on the second mentioned shaft, a chaintrained over said sprockets and connected with said arm.

In testimony whereof we afiix our signatures.

EDWARD BOURGORD. ALVIN LEITL.

